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30#include "mkimage.h"
31#include <image.h>
32#include <u-boot/crc.h>
33
34static image_header_t header;
35
36static int image_check_image_types (uint8_t type)
37{
38 if ((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT))
39 return EXIT_SUCCESS;
40 else
41 return EXIT_FAILURE;
42}
43
44static int image_check_params (struct mkimage_params *params)
45{
46 return ((params->dflag && (params->fflag || params->lflag)) ||
47 (params->fflag && (params->dflag || params->lflag)) ||
48 (params->lflag && (params->dflag || params->fflag)));
49}
50
51static int image_verify_header (unsigned char *ptr, int image_size,
52 struct mkimage_params *params)
53{
54 uint32_t len;
55 const unsigned char *data;
56 uint32_t checksum;
57 image_header_t header;
58 image_header_t *hdr = &header;
59
60
61
62
63
64
65 memcpy (hdr, ptr, sizeof(image_header_t));
66
67 if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
68 fprintf (stderr,
69 "%s: Bad Magic Number: \"%s\" is no valid image\n",
70 params->cmdname, params->imagefile);
71 return -FDT_ERR_BADMAGIC;
72 }
73
74 data = (const unsigned char *)hdr;
75 len = sizeof(image_header_t);
76
77 checksum = be32_to_cpu(hdr->ih_hcrc);
78 hdr->ih_hcrc = cpu_to_be32(0);
79
80 if (crc32 (0, data, len) != checksum) {
81 fprintf (stderr,
82 "%s: ERROR: \"%s\" has bad header checksum!\n",
83 params->cmdname, params->imagefile);
84 return -FDT_ERR_BADSTATE;
85 }
86
87 data = (const unsigned char *)ptr + sizeof(image_header_t);
88 len = image_size - sizeof(image_header_t) ;
89
90 checksum = be32_to_cpu(hdr->ih_dcrc);
91 if (crc32 (0, data, len) != checksum) {
92 fprintf (stderr,
93 "%s: ERROR: \"%s\" has corrupted data!\n",
94 params->cmdname, params->imagefile);
95 return -FDT_ERR_BADSTRUCTURE;
96 }
97 return 0;
98}
99
100static void image_set_header (void *ptr, struct stat *sbuf, int ifd,
101 struct mkimage_params *params)
102{
103 uint32_t checksum;
104
105 image_header_t * hdr = (image_header_t *)ptr;
106
107 checksum = crc32 (0,
108 (const unsigned char *)(ptr +
109 sizeof(image_header_t)),
110 sbuf->st_size - sizeof(image_header_t));
111
112
113 image_set_magic (hdr, IH_MAGIC);
114 image_set_time (hdr, sbuf->st_mtime);
115 image_set_size (hdr, sbuf->st_size - sizeof(image_header_t));
116 image_set_load (hdr, params->addr);
117 image_set_ep (hdr, params->ep);
118 image_set_dcrc (hdr, checksum);
119 image_set_os (hdr, params->os);
120 image_set_arch (hdr, params->arch);
121 image_set_type (hdr, params->type);
122 image_set_comp (hdr, params->comp);
123
124 image_set_name (hdr, params->imagename);
125
126 checksum = crc32 (0, (const unsigned char *)hdr,
127 sizeof(image_header_t));
128
129 image_set_hcrc (hdr, checksum);
130}
131
132
133
134
135static struct image_type_params defimage_params = {
136 .name = "Default Image support",
137 .header_size = sizeof(image_header_t),
138 .hdr = (void*)&header,
139 .check_image_type = image_check_image_types,
140 .verify_header = image_verify_header,
141 .print_header = image_print_contents,
142 .set_header = image_set_header,
143 .check_params = image_check_params,
144};
145
146void init_default_image_type (void)
147{
148 mkimage_register (&defimage_params);
149}
150